Bag-fulling machine.



Nmu. PATENTED'NOV. 2'?, 1906.

' B. F. BROWN. y

BAG PULLNG MACHINE.

.ANLIOTIQN FILED Nov. zo, las?.

2 sanmssmm 1.

No. 335,665. PATBNTED Nov. 27, 190e.

B. 'f'. BROWN.

BAG PULLING MACHINE.

APPLIGATION FILED NOV. 29. 1897.

2 SHEETS-SHEET Z lTo all whom, t may concern,.-

Be it known that I, BENJAMIN F. BROWN viv PATENT -Orricn l merrain''sTATigS BENJAMIN F. BROWN, or BOSTON, MASSACHUSETTS, ASSieNoB To THBBROWN BAe-riLLiNc MACHINE COMPANY, or riTCHBUBe, MASSA- CHUSBTTS'ACORPORATION or MASSACHUSETTS.

BAG-FULLING insel-HNE.'

Speccation of Letters Patent.

Patented Nov. 27, 1906.

application filed November Z9, 1897. Serial No. 660,110.

of Boston, county of Suffolk, State of Massachusetts, have invented anImprovement in Bag-Fulling Mechanism, of which the followingdescription, in connection with the accompanying drawings, is aSpecification, like characters on the drawings representing like parts.-

This invention relates to apparatus for lling bags, more especiallythose adapted for seed and other small ordine material which is to beput into paper bags.

In United States Patent No. dated May 14, '1895, an apparatus is shownfor filling bags, the pile of bags to be filled being placed in asuitable guide-box, where they are suitably held, the guide-boxpreferably having a reciprocating motion to aid in dctaching theendinost bag to be filled.

The'seed or other material to be put into the bags is discharged inmeasured quantities into a funnel in suitable manner. Innorder to openthe ba to receive the material, a bagopener enters lbetween the lip ofthe bag and the shorter ply thereof, a lip-holder coperating therewithand engaging the inner side of the lip, while at the saine timebag-spreaders enter the bag and stretch and hold it open and in positionwhile the material is deposited therein. After the bag is illed, the baghaving been previously pasted, it is grasped by jaws or arms ofa`.,bagcarrier and and retire from the bag.

moved into position .opposite a folding plate or bed and clamped against1t,so that the carrier in its further movement may open A folding-bladeand lip-turning device then act upon the bag to lay the lip of the bagover upon the body portion of thc bag, closing the saine.

In the practical operation of this apparatus it has been found ,thatsometimes the loaded or filled bag will be presented to the closingdevices in such manner that'the lip and Shorter ply of the bag willwrinkle or buckle, so that instead of a smooth and fiat fold of the lipover upon the shortervvv ply a very imperfect and unsightly closureresults. My present inventionlias for its object the production ofSimple ineansreadily applicable to bag-lling apparatus-such, forinstance, as ,shown in the'patent referred tofor presenting the loadedbag to the closing devices in lsuch condition that when said devicesoperate no wrinkling of the bag-mouth can take place, the two pliesbeing brought together flat 'and smooth, so that the lip when' turnedover will completely and pei'- fectly close the bag along a flat fold.

Figure 1 is a front elevation of a suflicient portion of a bag-fillingmachine to be understood with one Vembodiment of my invention appliedthereto, a bag being shown in position to be operated on by the closingdevice. Figl 2 is a detached view in elevation of the bag-carrier with abag filled thereby ready to move toward the bag-closing means. Fig. 3 isa top or plan view, partly broken out, of the mechanism shown in Fig. 2.Fig. 4 is a lefthand end elevation thereof. Fig. 5 is a right-hand endelevation thereof, a bag being partly shown by dotted lines, thebag-fulling mechanism not having operated. Fig. 6 is a cross-Sectiqnaldetail taken on the line a: Fig. .2, to more clearly show the manner ofmounting the bag-carrier, Fig. 7 is an enlarged detail taken on the linezr 1;', Fig. 2,

4with a 'pulley A3, to which is applied the power to drive the machine,thc stud c3 on which is loosely mounted the depending arm c7', having aT-sha ed lower end a8, on the upper side of whic is confined thefoldingblade als, the rocking sleeve A5, having arms A, in which thelip-closing device or roll B10 is mounted, controlled by springs B8 andadapted to travel over the folding-bed B, the bag-carrier, comprisingjaws c a', shaped to grasp between them the lower end of the bag, the suport'cg'on the jaw c to receive against it the )ottoin of the bag, therod c3, to which the said jaw is secured, supported in ears of a Fig.10h is a side=elevationmounted'upon a stud cl2, the arm cl3, fast on.

thesleeve and provided with a stud c14 and rolli to entera cam-groove Cin a cam ci", fast ori the main shaft, the operating mechanism for themovable jaw c, including a slide-rod d, extended through the hollow studc712 and jointed to one arm of a crank d', said rod acting when pushedin upon the arm d* of a bellcrank lever` mounted on a stud d, held in anear d5 on the hub of arm cs, to turn the said bell-crank lever, andthereby, through a link d8, connected with an arm d'9 of rod c3, openthe jaws, and the spring 107 to 1 normally close the jaws, are andl maybeall substantially as shown and operating in said patent referred to,like parts herein having corresponding reference characters.

The hollow stud c12 has its shank reduced and threaded (see Fig. 6) toenter the main frame, the enlarged inner end of the sleeve c1 restingagainst the latter andv being held in place by the enlarged head c2 ofthe stud.

I' i fast thereon and The shoulder C21 of the stud bears against theframe when the stud is tightened and prevents the sleeve c1 from beingjammed between the 'stud-head and frame. A split ring a4 is clampedsecurely on the head C20 by a screv* c, the ring having an enlargementa, on which is formed a projecting cani block (L43, substantiallytriangular in contour, (see Figs. 3 and 4,) the base 2 and inclinedouter side 3 being preferably rounded slightly at the point ofintersection. The hub c and shank c5 are provided, respectively, withears 6"" c5", which form bearings for a rock-shaft b3", having at itsrear end an upturned arm provided at its upper end with a roller orother stud t, adapted to travel about theperimetero the cam @43 as thearm c is rocked, and thereby rock the shaft b3 in its bearings. At thefront end the said shaft has fast thereon. an arm t, (see Figs. and 7,)connected by an adjustable link iiwith the depending end of one of thebag fulling or pinching members f, shown as a lever fulcrumed at f X onthe bar c4, the upn per end of said .member being herein shown asprovided upon its inner face with an ad- 4in stable convex block held inposition by a set-screw 6. A simi ar fulling member g is fulcrumed at gxon` the bar c4, said members being movable toward and' from each otherandv located outside the jaws c c', the said pinching membersextendingabove the jaws in order that the bag, held' in the latter, maybe engaged by the members fg at its longitul dinal edges and between itsends.

The member g has a convex block g/ thereon, 'held in adjusted positionby a set-screw 7the blocks directly engaging the side edges It'the bagAand pinching or-fulling the latter to thereby indent it at its sides,such indenting acting to kink the bag, as at 99, Figs. 9 and 10, andthereby brace the Walls thereol in' such manner that when thelip-closing deceases a will be brought together smoothly andevenly, thebracing preventing any Wrinkling of the lip or of the ply betweenthe twoside edges of the bag. Y

A spring S10' between the fullin members f g, .tends to normallymaintain t ends separated, a set-screw g2, carried by the member g,acting against a lug 22 on the bar c4 to limit the movement of themember g in one direction.

The member f has extended laterally therefrom opposite its fulerumagpreferably split forked arm f3, tightenedl to take up Wear by asuitable screw f2, Fig. 7, the forked end of said arm being entered bythe round ed extremity of an arm g3, pivoted at g4 on thofull'- ingmember g; l

The arm passes across the said member and at its outer end is turnedover, as at g5, to form a support for two adjustable stops, shownA asscrews 18 19, aboveand below the fulerum gX for the fulling member g andthe ulcrum bear against the outer edge of the member g,

the arm g3- being slotted at glg to embrace the Now A or stud gx. whenthe rock-shaft b3 is turned to swing arm Z133 in the direction of arrow80, Fig. 7, the fulling member f will be rocked to depress the armf3,and this movement is transmitted to the arm oppositely to memberf. Byadjustment of the link 634 the throw of the is regulated according tohead of the fulcrum screw the width of ai@ bag, and by means ofthe stops18 19 the position of the member g isadjusted to'ena'ble the upper ends'of the two members to'enga'ge simultaneously the opposite longitudinaledges of the bag. The loaded bag heldV by the jaws c c/ of thebag-carrier is carried by movement of the latter from the loading means(not shown) into the position shown in Fig. 1 to have the mouth of thebag closed. As thecarrier moves downward the base 2 of cam a acts-uponvthe roll t to .uiekly rock the shaft b3", and thereby cause ghe tullingmembers to engage and press 'ini- Ward the longitudinal edges oi the bagthen held on the carrier, so that the ba' Will be ulled or opened atits'mouth, as s own in Figs. 9 and 10, with the ply a/X and lipq c fullyconvexed or bellied outward. In' this condition the bag is presented bythecarrier to the action of the closing mechanism, (shown in Fig. 1,)and acts in op osite directions on the ply and lip they will e graduallyflattened and brought together in a straight line without anypossibility o'll Wrinkling, twisting, or buckling, so that when the lipis folded down upon the short ply ax the closure will be smooth, Hat,and complete. The roll t will? travel g4 for the said arm glix andvadapted to g3 to thereby rock the member g l members f and qeir upperIOC as such mechanism the bag being effected through the slide-rod-v (land intermediate connections between it and the movable j aw c,calthough the kinks will remain during closure of the bag. As

the fulling -pressure on the bag has been re' lieved by the opening ofthe members f g, the bag when closed is carried out of the way of theascending bag-carrier by suitable means,

as shown in the patent referred to. On its upward movement to take a newbag the roll 532 travels over the lcam a, fbut in, a reverse direction,to starting position. (Shown in Fig. 2..)

The invention will thus be seen to produce the desired effect by ullingthe bag, as it is herein termed, by indenting or kinking one or more ofthe closed ed es ofthe bag. The principle yupon which t e inventionworks will be seen-when the nature of the article acted upon isconsidered. The bags which are handled by such a vmachine. are flat andmade of paper or similar material having three closed edges and one openedge, which is subsequently closed by the flap or lip, In other words,the bag is similar to the wellknown paper envelop; The three closededges of the bag are straight and naturally tend to remain straight,because of the foldA in the paper and the tendency of the two sides ofthe bag to brace each other along the lines of the edges.' Hence inorder to dis.- tend the bag, soithat it may be filled, the side edges ofthe b ag must be brought into a osii'ion so that they will convergetowar( the top in order to open the mouth of the bag unlcssthe edges ofthe bag are crum led or kinked. When,- therefore, any fil ing is placedin a bag of'this character, unless the side edges are kinked or brokenthe mouth ol' the bag will take an oval form. If now it is desired toclose the bag by turning over the llap, one or more of the four ed es ofthe bag must give way, because the si es of the bag are more or lessseparated by the illing and (he l'our edges cannot be restored to theiropposite and parallel positions maintained in a flat empty bag. Underthese circumstances the flap edge of the bag will naturally he the oneto kink or break, because until the llap has been turned down thisedge'is Weak and. unbraced. as compared with either of the three closededges. This is just what is [ound to happen in the use of the machine towhich this .invention is. particularly applicable. Ypon attempting tofold over the Sap to iill a' bag a kink will take place in the Hap edge,thus rendering it impossible to produce a proper or sightly closure. If,however, one .or more of the other three closed edges of the bag bekinked to full the b'ag, then it will obviously allow of the flap beingfolded over to present a straight edge, because while it is impossiblein a 'lilled bag to have the four edges straight it is possible to haveany three or less straight.

The invention is not restricted to the preoise construction andarrangement of parts herein shown and described, for it is believed" tobe broadly new to `full a bag by external pressure, causing anindentation of one or more of the closededges of the bag,.thus allowingthe flap or lip of thebag to be closed andsea'led neatly and squarely.This indenting o eration may take lace either before or a ter the bagshave 1been filled, thel only requirement being that it shall take placebefore the ilap is folded over. The appearance of the bag is greatlyimproved by causing the kinks to be formed in definite positions, thusmaking the bags symmetrical and sightly. The invention thus described isdefined by the following claims.

Having fully described my invention, what I claim asl new, and desire tosecure by Letters Patent, is'k 1. The combination lwith ba holdingmeans, of means to engage ext-erna ly and indent a closedxedge of a bagto thereby full the bag and ermit an even fold of the bag-flap to closet e ba 2. The com ination with bag holding means, of means to engageexternally and indent the opposite closed side edges of the bag, tothereby fullthe bag and ermit an even fold of the bag-Hap to close t ebag.

3. The combination'Y with ba holding means, of means to engage externaly and indent a closed edge of a bau' to thereby full the bag and permitan even ilold of the bag-flap to close the bag, means for adjusting thebag engaging and mdenting means to vary the degree of indentation.v s fv 4.' The combination with ba --helding means, of means to engageexterna ly and indent the opposite closed side edges of the bag tothereby full the bag and permit an even fold of the ba -Hap to closlethe bag, means for adjusting t e bag engaging .and indenting means tovary' the degree ,of indentation.

5. The combination with bag holding means, of bag-fulling means forapplying external pressure to the opposite side closed edges of the bagat points removed from the mouth of the bag to indent said edges,whereby the contained material is caused` to retreat fromthe mouth andwhereby the open mouth may close and the bag-flap be turned over topresent a smooth unwrinkled closed ed e.

6. The combination with bag holding IOC IOR

IIO

l Imeans adapted. -to engage and hold the closed edge of thebag oppositethe mouth, of means -for apfplying external provided with ba pressureto' the oppo-l site s1 edges of 4lie bag to indent said edges wherebythe'open mouth may be closed and l l the bag-a 'turned over-to present asmooth unwnnkle edge.

7. In a bagefilling machine, a bag-carrier -holding means adapted toedge of the/ bag opposite -fulling means mounted' on 'adapted to applyexternal engage the vclose the mouth, ba the carrier anl pressure to theedges of and thereby indent the bag to full the same, bag-closingmechanlsm to operate on thebag, thus iulled and turn over the bag-flaptol close the bag, and `mechanism controlled by the movement of.

the bag-carrier to operate said bag-fulling means.

`8.In a baA -iilling apparatus7 amovable carrier provi ed with holdingmeans to engage the closed edge opposite the mouth of` the bag,bag-fulling means, vincluding opposite movable ulling members mounted onthecarri'er adjacent'said holding means and .adapted to, apply externalpressure to the lop@ Vposite longitudinal edges of a bag below the,posite longitudinal edges of a ,mouthof the full bag, 5o

site movable fulling bers to accommodate bags of bag-holdin lsaidmembers with the edges of the bag, and actuating mechanism for saidfulling means, substantially as described.'

10. In a bag-filling machine, a bag-carrienf means, and bag-fullinvmeans mounted t ereon, means to close t e open and actuating mechanism:for the fulli-ng means, constructed and arranged to full the bag prio`to its presentation by the carrier to said closing means 'andto releaseythe bag from trilling pressure as the monthof the bag is closed,substantially as i ineens',v of means movable inthe plane of thedescribed.' 11.' 'The combination with bag-holding bag and transverselyto a closed edge thereinv means, of devices oppositely to produce anindentation therein, whereby the openmouth of the bag may be closed Hatby the body ofthe bag givingat the indentation. y12. The --combinationwith bag holding means, of means movable in the plane of the n,

bag and transversely to a closed edge thereof toproduee an indentationtherein, whereby the open mouth of the bag may be closed flat by thebody of the bag givin at the indentation, means for adjustmglte throw ofthe bag-indenting means to vary the degree of indentation.

13. The combination' 'with'bagholdin disposed an movable in the plane ofthe bag and transversely to the closedside edges thereof to produ'ceindentations therein, whereby the open mouth of the bag maybe closedfiat by the body giving at the said indentations.

r 14. The"combination with bag'- holding means, of devices .-nppositelydisposed and movable'in the 'plane of the bag and transversely totheclosed side edges thereof to produce indentations therein',"'whereby theopen mouth of the bag may be'closed flat by the body giving at the saidindentations, means for adjusting the throw of said devices to vary theindentation;-

15. In a bag-filling machine, a stud mounted in the machine-frame, asleeve journaled on said stud, bag holding andcarrying means mounted onsaid sleeve, vlmeans for rocking said sleeve, bag-edfre-indenting meansmounted on the bag holding cam mounted on the end of said stud foroperating the bag-edge-indenting means during the rocking of saidsleeve. 16. In a bag-iilling machine, a stud mountedin the machine-frameand provided 'with a shoulder abutting said frame and with an enlargedyhead, a sleeve journale'd on said stud between-the shoulder-and head,bag holding and carrying means mounted on sa1d'sleeve,

and carrying means, a

means for rocking said sleeve, bag-edgee indenting means ing and thehead .mounted on the y)bag heldcarrying means, a cam mounted en of saidstud for voperating the bag- "edge-ind.enting means during the rockingof said sleeve.

.In testimony whereof I have-signed my I namefto this specification inthe presence of two subscribing Witnesses.

BENJAMIN F., BROWN. `Witnesses: i'

" JAMES F. D. GARFIELD,

KATHARINE B'. KENFIELD--

